Echinorhynchus truttae
| Echinorhynchus truttae | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Echinorhynchus truttae | ||||||||||||
| Cabinet , 1788 |
Echinorhynchus truttae is a type of scratchworm (Acanthocephala) thatlivesas an intestinal parasite mainly in trout fish and other freshwater fish and causes echinorhynchosis in them .
features
Female animals reach a body length of 15 to 20 millimeters, the males remain significantly smaller with a maximum of around 8 to 11 millimeters. The width of the animals is a maximum of 1.2 millimeters. The proboscis (proboscis) is cylindrical to club-shaped and has 20 to 22 rows of hooks of 13 to 16 hooks each, all of which are clearly curved backwards except for those in the back row. The males have six cement glands at the rear of the animals.
The eggs are long spindle-shaped with generic bulges on the egg poles and have only thin enveloping membranes. They have an average length of 100 to 110 and an average width of 23 to 24 micrometers.
Way of life
Echinorhynchus truttae lives as an intestinal parasite as an adult , especially in the intestines of trout fish such as brown trout and grayling . It can also be found in other freshwater fish such as pike . Various amphipods of the genus Gammarus can be used as intermediate hosts .
literature
- Theodor Hiepe, Renate Buchwalder, Siegfried Nickel: Textbook of Parasitology. Volume 3: Veterinary Helminthology. Gustav Fischer Verlag, Jena 1985; Page 397.